Apparatus foe stopping steam engines



(No Model.) I

A O. NOLL.

APPARATUS FOR STOPPING STEAM ENGINES.

PatentedSept. 27, 1887.

UNITED STATES PATENT OFFICE.

OTTO NOLL, OF BERLIN, GERMANY, ASSIGNOR TO THEODOR SCHILLER AND 7 PAULBRENNIOKE, BOTH OF SAME PLACE.

APPARATUS FOR STOPPING STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 370,644, datedSeptember 27, 1887, Application filed March 25, 1886. Serial No.196,441. (No model.) Patented in Germany February 7, 1886, No. 38,630;in Belgium February 11, 1886. No. 71,939; in France February 11,

1886, No. 174,088; in England Februarv 11, 1886, No. 2,016; in NorwayFebruary 16, 1886, No. 57; in Spain February 23, 1886, No. 8,713; inItaly March 20, 1886, No. 19,547; in Denmark June 4, 1886, No. 617, andin Austria-Hungary August 2, 1886, No. 6,788 and No. 36,772.

To all whom it may concern:

Be it known'that I, OTTO NoLL, machinist, of Berlin, in the Kingdom ofPrussia, Germany, have invented new and useful Improvements in 5Apparatus for Stopping Steam or other like M otive-Power Engines, ofwhich the following is a specification, reference being had therein tothe accompanying drawings, (no patents being obtained by me anywhere forthis invention until now, save inBelgium, No. 71,939, dated February 11,1886; Denmark, No. 617, dated June 4, 1886; France, No. 174,088, datedFebruary 11, 1886 Great Britain, No. 2,016, dated February 11, 1886Austria Hungary, No. 6,788 and No. 36,772, dated August 2, 1886; Italy,No. 19, 547, dated March 20, 1886; Spain, No. 8,713, dated February 23,1886, and in Norway, N0. 57, February 16, 1886.)

This invention has for its object an appa- 2o ratus by means of whichall kinds of motors as steam-engines and so on-may be instantly stoppedfrom any part of the factory, even when running at full speed. With thisnew apparatus in case of an accident, for example, 2 a single movementof a handle suffices to throw out of action instantly and without theaid of the engineer the motor, and, consequently, the transmissions andoperators driven by it. Said apparatus consists of a combination ofmech- 0 anisms, hereinafter described, whereby the valve-gear is shiftedinto such a position as to close, in a steamfengine, forinstance, theports designed for letting in the steam, and consequently prevent thesteam acting upon the pis- 3 5 ton.

In order that my said invention may be fully understood, I shall nowproceed to describe the same, and for that purpose shall refer to theseveral figures on the annexed sheet of drawings, the same letters ofreference indicating corresponding parts in all the figures.

Figures 1 and 3 of the accompanying drawings represent, respectively, aside and a front elevation of an apparatus according to this inventionapplied to a horizontal steam-engine, the parts being shown in thepositions which they occupy when the apparatus is in its normalcondition and the engine is in motion.

Figs. 2 and 4 represent similar views showing the position of thepartswhen the apparatus .has been brought into action so as to stop theengine. Fig. 5illustrates my invention as applied to a vertical engine.

The arrangement of apparatus illustrated in the drawings is shown inconnection with an ordinary fiat slide-valve; but it is evident that myinvention may be applied to engines or motors working with any otherdescription of valve controlling the admission and exhaust of the motivefluid.

The improved apparatus is provided with a frame, 12, capable of rockingor oscillating on a shaft, a, and provided at its upper part with asuitable segment, presenting notches c,with which engages a hand-lever,at, controlling the action of the valve according to the motive powerrequired. The lever a turns upon an axis at e, and is connected at k bya link, i, to the arm 9 of a lever, g m, centered at h in a support orpillar, f. An arm carrying a coun- 7o ter-weight, Z, is attached to theaxis of this 1ever, in order to insure the proper action of theapparatus. The arm m of the aforesaid lever g m is connected to theupper extremity of a slotted link, 71, jointed at its lower extremity 7to an eccentric-rod, 0,which, by the intervention of the aforesaidslotted link, operates a rod, 1), connected to the slide-valve,workingin a valve-chest, q.

Facing the lower end of the frame I) there are provided one or moreelectro-magnets, r, which attract this part of the frame when excitedand cause the frame to swing on its axis, so that the upper part ornotched segment moves away from and releases the lever d, which fallsover in thedirectiou of the leverarm m, and the latter descends underthe influence of its own weight. At the same time the eccentric-rod 0 ismoved downward, describing an arc of a circle, so that the link n, 0connected therewith,pulls the valve-rod p outward. This latter motionplaces the valvegear in a position in which both steam-inlet ports aremaintained closed in all positions of the crank. The Valve being thrownout of ac- 5 tion by the mechanism hereinbefore described,

and the inlet and outlet ports maintained.

closed entirely, separate and perfectly closed layers or cushions ofsteam are formed on each side of the piston, whose motion is therebyretarded, so that the engine isinstantl y and easily stopped without ajerk or recoil.

lhe mechanism may evidently be worked mechanically by means of wires inplace of electrically, as hereinbefore described, connections beingestablished in either case with all parts of the works or factory. Thehandles, pulls, or switches may be placed upon the machines themselvesin such a position that in case of accident the operative, findinghimself in danger, may instantly bring the apparatus hercinbeforedescribed into action and arrest the motion of the machinery.

The action of the apparatus illustrated in Fig. 5 will be readilyunderstood by reference to the drawings, the same letters of referencebeing used to indicate corresponding parts, as in the arrangementhereinbefore described with reference to Figs. 1 to 4:.

It will be readily understood that the invention is not necessarilylimited to the precise details as hcreinbefore described andillustrated, and particularly mentioned in the claiming clause, as theirequivalents or mechanical substitutes, such as are within the knowledgeof engineers, may be, it is evident, employed, according tocircumstances.

\Vhat I claim, and desire to secure by Letters Patent of the UnitedStates, is-

An apparatus consisting of the arrangement and combination of parts foroperating, substantially as hereinbefore described, for stopping steamor other motive-power engines from any distance or desired position,consisting of an oscillating frame, I), having therein notches c,engaging with a lever, d, centered at e, for ordinarily controlling theaction of the slidevalve according to the motive power required, thesaid apparatus further comprising a leverarm, g, connected to the saidlever d by means of alink, 1 and operating a lever-arm, m, centered to asupport and provided with a counter-weight forthe purpose of insuringthe correct action of the apparatus, the front end of the said lever-armm being jointed to a slotted link, a, connected to the eccentrierod 0,operating the rod 2, attached to the valve in the valve-chest q.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

OTTO NOLL.

"Witnesses:

B. Roi, WILHELM PATAKY.

